fix(sort_routes.ts): optional route parameters sorting

[robisim74]

fix #1016

What is it?

• Feature / enhancement
• [ x] Bug
• Docs / tests

Description

After the refactoring of route sorting, optional route parameters are not working as expected: /[...x]/y < /[...x]
The problem is that the check of the ...rest is done on the route id and not on the pathname.
The units tests passed the same because in the test the id was initialized with the pathname.

@adamdbradley

Use cases and why

https://example.com/sku/[...skuId]/details
Should match: https://example.com/sku/1234/details

Checklist:

• [x ] My code follows the developer guidelines of this project
• [x ] I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• Added new tests to cover the fix / functionality

[manucorporat]

Can you fix / add some new tests that would fail without the fix?!

[robisim74]

@manucorporat Done

[manucorporat]

Thank you so much @robisim74 ! you rock!
we will release a new version shortly